[KAFKA-7228] DeadLetterQueue throws a NullPointerException

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.1, 2.1.0
• Component/s: connect
• Assignee: Arjun Satish
• Reporter: Arjun Satish
• Created: 01/Aug/18 15:51
• Updated: 18/Aug/18 19:37
• Resolved: 02/Aug/18 21:37

Description

Using the dead letter queue results in a NPE: 

[2018-08-01 07:41:08,907] ERROR WorkerSinkTask{id=s3-sink-yanivr-2-4} Task threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask)
java.lang.NullPointerException
    at org.apache.kafka.connect.runtime.errors.DeadLetterQueueReporter.report(DeadLetterQueueReporter.java:124)
    at org.apache.kafka.connect.runtime.errors.ProcessingContext.report(ProcessingContext.java:137)
    at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:108)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.convertAndTransformRecord(WorkerSinkTask.java:513)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.convertMessages(WorkerSinkTask.java:490)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.poll(WorkerSinkTask.java:321)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.iteration(WorkerSinkTask.java:225)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:193)
    at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:175)
    at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:219)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
[2018-08-01 07:41:08,908] ERROR WorkerSinkTask{id=s3-sink-yanivr-2-4} Task is being killed and will not recover until manually restarted (org.apache.kafka.connect.runtime.WorkerTask)

DLQ reporter does not get a errorHandlingMetrics object when initialized through the WorkerSinkTask.

Issue Links

• links to: GitHub Pull Request #5440